Electric cut-out



(No Model.)

o. P. PBRSSON.l ELECTRIC CUT0UT No. 499,930. Patented June 20,1893.

@Zwan/Z574' ddmv.

UNITED STATES PATENT EErcE.

OTTO F. PERSSON, OF LYNN, ASSIGNOR OF ONE-HALF TO HJALMAR O. SOHELIN, OF BOSTON, MASSACHUSETTS.

ELECTRIC CUT-OUT.

SPECIFICATION forming part of Letters Patent No. 499,930, dated June 20, 1893.

Application filed May l, 1893. Serial No, 472,454. (No model.)

To all whom it may concern.-

Be it known that I, OTVTO F. PERSSON, a citi- Zen of Sweden, anda resident of Lynn, `in the county of Essex and State of Massachusetts, have invented new and useful Improvements in Out-O uts for Electric Circuits, of which the following, taken in connection with the accompanying drawings, is a specification.

Thisginvention relates to improvements in cut-outs for electric circuits for the purpose of opening or closing an electric circuit containing'a lamp, motor or other electrically actuated device and its object is to etliect a quick circuit breaking and closing movement of the contact arms independent of the speed with which the handle is actuated as will hereinafter beinore fully shown and described, reference being had to the accompanying drawings, wherein- Figure l represents a front elevation of the improved cut out. Fig. 2 represents a cross section on the line 2-2 in Fig. l. Fig. 3 represents a cross-section on the line 3-3 in Fig. l. Fig. 4. represents a detail front View of the spring actuated impulse wheel; and Fig. 5 represents a diagram showing the connection from the line wire through the cut out and lamp in the circuit.

Similar letters refer to similar parts wherever they occur on the different parts of the drawings.

A represents a base of suitable insulating material on which is pivoted at h, the handle B which is made of a suitable insulating material or covered with such as may be most practical. To the inner end of the handle B is attached a slotted piece B as shown in Fig. l; said slotted end B is loosely pivoted to an arm C attached in a suitable manner to a notched impulse disk or wheel O which is pivoted preferably on a stud C secured to the base A as shown in Figs. l, 3 and 4.

D, D, represent a pair of spring pressed pawls or yielding springs, the free ends of which are adapted to fit into the notched eircumference of the impulse wheel C as shown in Fig. 4, when the circuit is kept either open or closed.,

In practice I prefer to pivot the upper ends of the yielding pawls D, D, at d., d, and to con nect them below their fulcra by means o'l a coiled spring D as shown in Figs. l and 4, but this is not essential as if so desired the pawls D, D, may be made sufficiently yielding to allow them to expand and contract as the impulse wheel O is turned, without the need of the auxiliary spring D.

E, E, represent the usual binder posts secured to the base A; and F represents the line wire; G, G, represent similar bin der posts also secured to the base A; and II represents the lamp wire leading from said binder posts to and through the lamp I (Fig. 5) or other electric appliance for which the switch or cut out is to be used.

To metallic extensions on the binder posts E, E, are pivoted at e, c, the metalcontact arms K, K, the upper ends of which are to be brought and held against metal contact pieces g, g, metallically connected to the binder posts G, G, when the current is closed through the lamp, tbc., the said contact arms K, K are adapted to be swung inward against the metal contact piece L on the base A when the current from the line wireis to be cut out from the lamp in the circuit.

The lever C on the notched impulse wheel is loosely connected to the contact arms K, K, by means of insulating links M, IWI, pivoted in their inner ends to said lever O and having slots m, m, inv their outer ends adapted to receive screws or projections k, 7a, attach ed to the arms K, K, as shown in Figs. l and 3.

The contact arms K, K, are shown in full lines in Figs. land 5 as being metallically connected to the contact pieces g,'g, by which the line circuit is closed through the lamp. In dotted lines in said Figs. l and 5, the said arms K, K, are shown as being Ametallically connected to the middle contact piece Il by which the lamp is cut out of the line circuit.

In operating the device, supposing the parts thereof are in their respective positions shown in Fig. l and it is desired to cut the lamp, the., out of the circuit, all that is necessary to do is to turn the handle B in the direction of the arrow shown in Fig. l; as the said handle is swung to or near its middle position it causes the impulse wheel O to be turned in such a manner that its prongs or projections IOO will eXpand the yielding pawls D, D, and this Without imparting motion to the contact arms K, K, owing to their being loosely connected to the slotted links M, M. By moving),` the handle B in the same direction slightly beyond its midway position the spring pawls D, D, will-cause a quick partial revolution to be given to the notched impulse Wheel C causing the pawls B to he carried instantly to the end of its stroke and causing the contact arms K, K, to be disconnected from the plates g, g, and brought metallically in contact With the middle contact piece L by Which the desired result is attained. By moving` the handle B in the opposite direction a similar operation takes pla-ce for the purpose of closing` the circuit through the lamp or other electrical appliance.

Having thus 'fully described the nature, construction, and operation of my invention, I wish to secure by Letters Patent and claiml. The combination of two circuit closing arms pivotally connected to the line Wire, contact pieces on the wire of the lamp or other electrical appliance and a cut out contact piece as described, a notched impulse disk and yielding pawls, a handle connected to said impulse disk and connecting mechanism to the circuit closing arms, substantially as and for the purpose set forth.

2. In a cut out for electric circuits a pivoted handle and a notched impulse disk pivoted thereto combined with yielding pawls engagiut,T the latter, a pair of circuit closing arms pivotally connected to the line Wire, circuit closing and breaking contact pieces and links pivoted to the impulse. disk and loosely con nected to the circuit closing arms, substantially as and for the purpose set forth.

In a cut out for electric circuits a base having pivoted to it a handle, a spring' pawl actuated impulse disk connected to said handle combined with a pair of circuit closing arms pivotally connected tothe line Wire, cir cuit closing,` and breaking contact pieces, and slotted links interposed between the impulse disk and circuit closing` arms, substantially as and for the purpose set forth.

In testimony whereof I have signed my name to this specification, in the prescnccoll two subscribing: witnesses, on this 15th day of April, A. D. ISGS.

O'VO F. PERSSON.

Vitnesses:

ALBAN ANDRN, WM. W. SUiuitmns. 

